TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
TROPOSPHERIC INTERFERENCE [4 records]
Record 1 - internal organization data 2021-11-30
Record 1, English
Record 1, Subject field(s)
- Telecommunications
- Radioelectricity
- Internet and Telematics
Record 1, Main entry term, English
- opportunity signal
1, record 1, English, opportunity%20signal
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- signal of opportunity 2, record 1, English, signal%20of%20opportunity
correct
- SOP 3, record 1, English, SOP
correct
- SOOP 4, record 1, English, SOOP
correct
- SOP 3, record 1, English, SOP
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
[Global navigation satellite system(GNSS) ] positioning is affected by various measurement errors, such as ionospheric delay, tropospheric delay, and multipath effect. In addition, the GNSS signal is weak[;] it comes from 20, 000 to 30, 000 km away and is vulnerable to unintentional radio frequency interference or malicious interference(jamming and spoofing)... Therefore, it is of great significance to enhance the reliability and positioning accuracy of GNSS by other means... Many studies consider using signals of opportunity(SOP) for positioning when GNSS is unavailable or unreliable. These SOP include digital television[, ] Bluetooth[, low earth orbit(LEO), ] Wi-Fi[, ] vision[, ] 5 G [(fifth generation), ] and so on. 3, record 1, English, - opportunity%20signal
Record number: 1, Textual support number: 1 OBS
opportunity signal; signal of opportunity: designations usually used in the plural. 5, record 1, English, - opportunity%20signal
Record 1, Key term(s)
- opportunity signals
- signals of opportunity
Record 1, French
Record 1, Domaine(s)
- Télécommunications
- Radioélectricité
- Internet et télématique
Record 1, Main entry term, French
- signal d'opportunité
1, record 1, French, signal%20d%27opportunit%C3%A9
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
signal d'opportunité : désignation habituellement utilisée au pluriel. 2, record 1, French, - signal%20d%27opportunit%C3%A9
Record 1, Key term(s)
- signaux d'opportunité
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2021-01-18
Record 2, English
Record 2, Subject field(s)
- Radio Interference
- Radio Waves
Record 2, Main entry term, English
- radio fade-out
1, record 2, English, radio%20fade%2Dout
correct, officially approved
Record 2, Abbreviations, English
Record 2, Synonyms, English
- fadeout 2, record 2, English, fadeout
correct
- fading 2, record 2, English, fading
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
[The] interference phenomena caused by any type of multipath transmission either of tropospheric or ionospheric origin. 2, record 2, English, - radio%20fade%2Dout
Record number: 2, Textual support number: 1 OBS
radio fade-out: designation officially approved by the Electronics and Telecommunications Terminology Committee (CUTEL). 3, record 2, English, - radio%20fade%2Dout
Record 2, Key term(s)
- radio fadeout
- fade-out
Record 2, French
Record 2, Domaine(s)
- Perturbations radio
- Ondes radioélectriques
Record 2, Main entry term, French
- évanouissement radioélectrique
1, record 2, French, %C3%A9vanouissement%20radio%C3%A9lectrique
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- fading 1, record 2, French, fading
avoid, anglicism, masculine noun
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2007-08-14
Record 3, English
Record 3, Subject field(s)
- Telecommunications Facilities
- Radio Broadcasting
Record 3, Main entry term, English
- sufficient angular separation
1, record 3, English, sufficient%20angular%20separation
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Where a fixed service using tropospheric scatter operates in the bands listed in the first column and there is insufficient frequency separation, there must be sufficient angular separation between the direction to the space station and the direction of maximum radiation of the antenna of the receiving station of the fixed service using tropospheric scatter, in order to ensure that the interference power at the receiver input of the fixed-service station does not exceed-168 dBW in any 4 kHz band. 1, record 3, English, - sufficient%20angular%20separation
Record 3, French
Record 3, Domaine(s)
- Installations de télécommunications
- Radiodiffusion
Record 3, Main entry term, French
- séparation angulaire suffisante
1, record 3, French, s%C3%A9paration%20angulaire%20suffisante
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Lorsque le service fixe utilisant les techniques de diffusion troposphérique fonctionne dans les bandes énumérées dans la première colonne et que la séparation de fréquence est insuffisante, il faut prévoir une séparation angulaire suffisante entre la direction de la station spatiale et celle du rayonnement maximal de l'antenne de la station réceptrice du service fixe utilisant les techniques de diffusion troposphérique, afin que la puissance de brouillage à l'entrée du récepteur de la station du service fixe ne dépasse pas -168 dBW dans une bande quelconque large de 4 kHz. 1, record 3, French, - s%C3%A9paration%20angulaire%20suffisante
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1998-02-04
Record 4, English
Record 4, Subject field(s)
- Telecommunications Transmission
Record 4, Main entry term, English
- tropospheric interference 1, record 4, English, tropospheric%20interference
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record 4, French
Record 4, Domaine(s)
- Transmission (Télécommunications)
Record 4, Main entry term, French
- brouillage d'origine troposphérique
1, record 4, French, brouillage%20d%27origine%20troposph%C3%A9rique
masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 OBS
Codage vidéo. 1, record 4, French, - brouillage%20d%27origine%20troposph%C3%A9rique
Record 4, Spanish
Record 4, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada
Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools
The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies
Access Translation Bureau glossaries and vocabularies.
- Date Modified: